[Libguestfs] [PATCH VERSION 3] Generic partition creation interface.

This adds a "part-disk" command which can be used to quickly partition a whole disk into a single partition. Updates the tests and a recipe to use it. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://et.redhat.com/~rjones/virt-df/